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  <title>Release Notes for MAC 802.15.4 - 2011 </title>
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<h1 id="release-notes-for-openthread-stack"><small>Release Notes for</small> MAC 802.15.4 - 2011 </h1>
<p>Copyright © 2019 STMicroelectronics<br />
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<a href="https://www.st.com" class="logo"><img src="_htmresc/st_logo.png" alt="ST logo" /></a>
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<h1 id="license">License</h1>
<p>This software component is licensed by ST under BSD 3-Clause license, the “License”; You may not use this component except in compliance with the License. You may obtain a copy of the License at:</p>
<p><a href="https://opensource.org/licenses/BSD-3-Clause">https://opensource.org/licenses/BSD-3-Clause</a></p>
<h1 id="purpose">Purpose</h1>
<p>IEEE 802.15 Working group intends to define a standard that enable a low cost and low power communications. The IEEE 802.15.4 standard defines physical layers (PHY) and a Medium Access Control (MAC) which intend to address many simple network application space as Internet of Things solutions.<br>Two different kind of devices participate to IEEE 802.15.4 network: 
<ul><li><p>Full Function Devices which may ensure the role of Personal Area Network (PAN) coordinator and </li></p><li><p>Reduced Function Device (RFD) which serve as Node for extremely simple application.</li></p></ul></p>
<p>The provided 802.15.4 MAC API is integrated as shown on the figure below:</p>
<a href="http://www.ieee802.org/" class="logo"><img src="_htmresc/MACLayers.png" alt="MACLayers logo" /></a>
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<p>The MAC 802.15.4 from STM32_WPAN  middleware makes the link between the network layers and the RF protocol processor.</p>
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<h1 id="update-history">Update History</h1>
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<input type="checkbox" id="collapse-section4" checked aria-hidden="true"> <label for="collapse-section4" aria-hidden="true">V1.0.0 / 31-January-2019</label>
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<h2 id="main-changes">Main Changes</h2>
<h3 id="first-release">First release</h3>
<p>MAC API is based on latest official IEEE Std 802.15.4-2011 document available from :</p>
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<li><p><a href="http://grouper.ieee.org/groups/802/15/pub/Download.html">http://grouper.ieee.org/groups/802/15/pub/Download.html</a></p></li>
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